Hi Everyone
Sorry I've been away for 24 hours, not anticipating there would be such a rsponse so immediately - I'm a bit overwhelmed and can't thank you enough. ! I had discounted the Stewart Guthrie's born in Angus as too far as well.
All of the children you have listed check out with my list Gadget - I found a Margaret GREGG on the IGI which might be her:
Margaret GREGG b. 13 Feb 1823 Loudon Ayr
Parents: Andrew GREGG b. 2 Mar 1794 Loudon Ayr d. 23 Aug 1832
Agnes BROWN b. 1800/01 Newmilns, Ayr
m 25 Apr 1818
Second marriage Hugh McMILLAN 21 Jul 1838 at Loudon Ayr
Andrews Parents: James GREGG b. ? buried 23 Aug 1832 Loudon Ayr
Mary MAIR b Loudon Ayr (Parents Thomas MAIR, Susanna WILSON)
And there is that MAIR name associated with the Angus Stewart GUTHRIE.
These names don't really fit with Stewart and Margaret's childrens names do they - and on the 1851 Census you found Gadget, that Margaret has her birthplace as Port Glasgow.
Just to confuse the issue with names, their son Stewart GUTHRIE b. 16 May 1854 Dalmellington m. Catherine WATT, who emigrated to NZ named his children (in order)
Margaret, David, Jessie, Alexander, John, lastly an Unamed Stillborn son.All the surviving children had the middle name Watt.
His brother James GUTHRIE b. Dalmellington 27 Sep 1846 m. Mary BRYDEN, had the following in order - Stewart, Robert, Thomas Alexander, James, William, Sarah McMurdo, John Hugh, George Bryden, and Gordon.
Thanks for the info on possible parentage in Borgue - and brother William - grand idea to look for other family in the same area........I'll give it a further go with those names, many thanks.
Splashie